shmem_alloc_and_add_folio identifier - Linux source code next-20260811

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linux

Versions

FIXME
- FIXME
  - next-20260811

Defined in 1 files as a function:

mm/shmem.c, line 1938 (as a function)

Referenced in 1 files:

mm/shmem.c
- line 2515
- line 2527

Smatch caller information:

mm/shmem.c shmem_get_folio_gfp() -> shmem_alloc_and_add_folio()

Type	Parameter	Key	Value
PARAM_VALUE	0	vmf	0,4096-ptr_max
PARAM_VALUE	0	vmf->gfp_mask	0,64-u32max
PARAM_VALUE	0	vmf->vma	4096-ptr_max
PARAM_VALUE	0	vmf->vma->vm_file	4096-ptr_max
PARAM_VALUE	0	vmf->vma->vm_file->f_inode->i_mapping	4096-ptr_max
PARAM_VALUE	0	vmf->vma->vm_mm->mmap_lock.first_waiter->handoff_set	0-1
PARAM_VALUE	0	vmf->vma->vm_mm->mmap_lock.first_waiter->type	0-1
PARAM_VALUE	0	vmf->vma->vm_mm->vma_writer_wait.task->sched_class->uclamp_enabled	0-1
PARAM_VALUE	1	gfp	0-2097151
PARAM_VALUE	2	inode	4096-ptr_max
PARAM_VALUE	2	inode->i_data.a_ops->bmap	0,4096-ptr_max
PARAM_VALUE	2	inode->i_data.a_ops->direct_IO	0,4096-ptr_max
PARAM_VALUE	2	inode->i_data.a_ops->dirty_folio	0,4096-ptr_max
PARAM_VALUE	2	inode->i_data.a_ops->error_remove_folio	0,373303432983703552,3650281484867371008,6933238642996355072,7934844886813757440
PARAM_VALUE	2	inode->i_data.a_ops->free_folio	0,87018317492477952,1576041750683152384,3223952723663937536,4787850423793061888
PARAM_VALUE	2	inode->i_data.a_ops->invalidate_folio	0,4096-ptr_max
PARAM_VALUE	2	inode->i_data.a_ops->is_dirty_writeback	0,7518438349615988736,8867638692533350400
PARAM_VALUE	2	inode->i_data.a_ops->launder_folio	0,122107076755599360,327075084911996928,858079631894568960,7268098942548045824
PARAM_VALUE	2	inode->i_data.a_ops->migrate_folio	0,4096-ptr_max
PARAM_VALUE	2	inode->i_data.a_ops->read_folio	0,4096-ptr_max
PARAM_VALUE	2	inode->i_data.a_ops->readahead	0,4096-ptr_max
PARAM_VALUE	2	inode->i_data.a_ops->release_folio	0,4096-ptr_max
PARAM_VALUE	2	inode->i_data.a_ops->swap_activate	0,4096-ptr_max
PARAM_VALUE	2	inode->i_data.a_ops->swap_deactivate	0,1546359495696728064,3888069641387622400,7359158453655175168,8604917376913055744
PARAM_VALUE	2	inode->i_data.a_ops->swap_rw	0,4986685196838862848,8487923053812363264
PARAM_VALUE	2	inode->i_data.a_ops->write_begin	0,4096-ptr_max
PARAM_VALUE	2	inode->i_data.a_ops->write_end	0,4096-ptr_max
PARAM_VALUE	2	inode->i_data.a_ops->writepages	0,4096-ptr_max
PARAM_VALUE	2	inode->i_mapping	4096-ptr_max
PARAM_VALUE	2	inode->i_mapping->a_ops	4096-ptr_max
PARAM_VALUE	2	inode->i_mapping->host->i_sb->s_cop->empty_dir	0,86,661756434209751040,4392966320616476672,5234023279986843648,8614756098313990144
PARAM_VALUE	2	inode->i_mapping->host->i_sb->s_cop->get_context	0,706,17350455714160640,4513809449498124288,5149251875611672576,7067778626864828416
PARAM_VALUE	2	inode->i_mapping->host->i_sb->s_cop->set_context	0,67,317457138841939968,3250154607523569664,5979066299606671360,6756104566897242112
PARAM_VALUE	2	inode->i_mapping->host->i_sb->s_export_op->encode_fh	0,2,4096-ptr_max
PARAM_VALUE	2	inode->i_mapping->i_mmap_rwsem.first_waiter->handoff_set	0-1
PARAM_VALUE	2	inode->i_mapping->i_mmap_rwsem.first_waiter->type	0-1
PARAM_VALUE	2	inode->i_op->atomic_open	0,4096-ptr_max
PARAM_VALUE	2	inode->i_op->create	0,4096-ptr_max
PARAM_VALUE	2	inode->i_op->fiemap	0,4096-ptr_max
PARAM_VALUE	2	inode->i_op->fileattr_get	0,4096-ptr_max
PARAM_VALUE	2	inode->i_op->fileattr_set	0,4096-ptr_max
PARAM_VALUE	2	inode->i_op->get_acl	0,434817594022129664,1176132492164517888,2308293591809245184,2352177825799393280,5894181231315005440,7161457072544161792,8358186677320523776
PARAM_VALUE	2	inode->i_op->get_inode_acl	0,4096-ptr_max
PARAM_VALUE	2	inode->i_op->get_link	0,4096-ptr_max
PARAM_VALUE	2	inode->i_op->get_offset_ctx	0,2606890545167454208
PARAM_VALUE	2	inode->i_op->getattr	0,4096-ptr_max
PARAM_VALUE	2	inode->i_op->link	0,4096-ptr_max
PARAM_VALUE	2	inode->i_op->listxattr	0,4096-ptr_max
PARAM_VALUE	2	inode->i_op->lookup	0,4096-ptr_max
PARAM_VALUE	2	inode->i_op->mkdir	0,4096-ptr_max
PARAM_VALUE	2	inode->i_op->mknod	0,4096-ptr_max
PARAM_VALUE	2	inode->i_op->permission	0,4096-ptr_max
PARAM_VALUE	2	inode->i_op->readlink	0,1728600404483375104,2832489546165891072,2874824064778891264,3069732422725099520,4516337085607264256
PARAM_VALUE	2	inode->i_op->rename	0,4096-ptr_max
PARAM_VALUE	2	inode->i_op->rmdir	0,4096-ptr_max
PARAM_VALUE	2	inode->i_op->set_acl	0,4096-ptr_max
PARAM_VALUE	2	inode->i_op->setattr	0,4096-ptr_max
PARAM_VALUE	2	inode->i_op->symlink	0,4096-ptr_max
PARAM_VALUE	2	inode->i_op->sync_lazytime	0,6951464784224747520
PARAM_VALUE	2	inode->i_op->tmpfile	0,4096-ptr_max
PARAM_VALUE	2	inode->i_op->unlink	0,4096-ptr_max
PARAM_VALUE	2	inode->i_op->update_time	0,4096-ptr_max
PARAM_VALUE	2	inode->i_rwsem.first_waiter->type	0-1
PARAM_VALUE	2	inode->i_sb->s_cop->inode_info_offs	1632,1720,1808,2632,2648,2704,2712
PARAM_VALUE	2	inode->i_sb->s_export_op->encode_fh	0,2,4096-ptr_max
PARAM_VALUE	2	inode->i_sb->s_umount.first_waiter->handoff_set	0-1
PARAM_VALUE	2	inode->i_sb->s_umount.first_waiter->type	0-1
PARAM_VALUE	3	index	0-2251799813685247
PARAM_VALUE	5	orders	254,512
BUF_SIZE	0	vmf->cow_page	(-1),64
BUF_SIZE	2	inode	(-1),1-s32max
BUF_SIZE	2	inode	(-1),1-s32max
BUF_SIZE	2	inode->i_mapping->a_ops	(-1),152
BUF_SIZE	2	inode->i_private	(-1),40
CAPPED_DATA	2	inode->i_mapping	1
CAPPED_DATA	3	index	1
CAPPED_DATA	3	index	1
DATA_SOURCE	0	vmf	$6
DATA_SOURCE	1	gfp	r thp_shmem_limit_gfp_mask
DATA_SOURCE	2	inode	$0
DATA_SOURCE	3	index	$1
DATA_SOURCE	5	orders	r shmem_allowable_huge_orders
FUZZY_MAX	3	index	2251799813685247
NOSPEC	0	vmf->address
NOSPEC	0	vmf->pgoff
NOSPEC	2	inode->i_size
NOSPEC	3	index
NOSPEC	3	index
HARD_MAX	3	index	2251799813685247
RX_PATH
TASK_NOT_RUNNING
HOST_DATA	3	index	0-2251799813685247[c]
USER_DATA	0	vmf->address	0-u64max[c]
USER_DATA	0	vmf->pgoff	0-4503599627370495
USER_DATA	0	vmf->pte	4096-ptr_max[u]
USER_DATA	0	vmf->real_address	0-u64max[c]
USER_DATA	2	inode->i_blocks	0-36028797024823343,18428729675200069633-u64max
USER_DATA	2	inode->i_bytes	0-65023[c]
USER_DATA	2	inode->i_mode	0-u16max
USER_DATA	2	inode->i_sb->s_flags	0-u64max[c]
USER_DATA	2	inode->i_size	(-9223372036854775807)-(-4),0-s64max
USER_DATA	3	index	0-2251799813685247[c]
NO_OVERFLOW_SIMPLE	0	vmf->vma->vm_end
NO_OVERFLOW_SIMPLE	0	vmf->vma->vm_pgoff
NO_OVERFLOW_SIMPLE	0	vmf->vma->vm_start
NO_OVERFLOW_SIMPLE	2	inode->i_blkbits
NO_OVERFLOW_SIMPLE	2	inode->i_mapping->host->i_size
NO_OVERFLOW_SIMPLE	2	inode->i_sb->s_blocksize
NO_OVERFLOW_SIMPLE	2	inode->i_sb->s_blocksize_bits
UNITS	3	index	unit_page
UNITS	4	fault_mm	unit_byte
HALF_LOCKED2	2	&inode->i_rwsem

mm/shmem.c shmem_get_folio_gfp() -> shmem_alloc_and_add_folio()

Type	Parameter	Key	Value
PARAM_VALUE	0	vmf	0,4096-ptr_max
PARAM_VALUE	0	vmf->gfp_mask	0,64-u32max
PARAM_VALUE	0	vmf->vma	4096-ptr_max
PARAM_VALUE	0	vmf->vma->vm_file	4096-ptr_max
PARAM_VALUE	0	vmf->vma->vm_file->f_inode->i_mapping	4096-ptr_max
PARAM_VALUE	0	vmf->vma->vm_mm->mmap_lock.first_waiter->handoff_set	0-1
PARAM_VALUE	0	vmf->vma->vm_mm->mmap_lock.first_waiter->type	0-1
PARAM_VALUE	0	vmf->vma->vm_mm->vma_writer_wait.task->sched_class->uclamp_enabled	0-1
PARAM_VALUE	2	inode	4096-ptr_max
PARAM_VALUE	2	inode->i_data.a_ops->bmap	0,4096-ptr_max
PARAM_VALUE	2	inode->i_data.a_ops->direct_IO	0,4096-ptr_max
PARAM_VALUE	2	inode->i_data.a_ops->dirty_folio	0,4096-ptr_max
PARAM_VALUE	2	inode->i_data.a_ops->error_remove_folio	0,373303432983703552,3650281484867371008,6933238642996355072,7934844886813757440
PARAM_VALUE	2	inode->i_data.a_ops->free_folio	0,87018317492477952,1576041750683152384,3223952723663937536,4787850423793061888
PARAM_VALUE	2	inode->i_data.a_ops->invalidate_folio	0,4096-ptr_max
PARAM_VALUE	2	inode->i_data.a_ops->is_dirty_writeback	0,7518438349615988736,8867638692533350400
PARAM_VALUE	2	inode->i_data.a_ops->launder_folio	0,122107076755599360,327075084911996928,858079631894568960,7268098942548045824
PARAM_VALUE	2	inode->i_data.a_ops->migrate_folio	0,4096-ptr_max
PARAM_VALUE	2	inode->i_data.a_ops->read_folio	0,4096-ptr_max
PARAM_VALUE	2	inode->i_data.a_ops->readahead	0,4096-ptr_max
PARAM_VALUE	2	inode->i_data.a_ops->release_folio	0,4096-ptr_max
PARAM_VALUE	2	inode->i_data.a_ops->swap_activate	0,4096-ptr_max
PARAM_VALUE	2	inode->i_data.a_ops->swap_deactivate	0,1546359495696728064,3888069641387622400,7359158453655175168,8604917376913055744
PARAM_VALUE	2	inode->i_data.a_ops->swap_rw	0,4986685196838862848,8487923053812363264
PARAM_VALUE	2	inode->i_data.a_ops->write_begin	0,4096-ptr_max
PARAM_VALUE	2	inode->i_data.a_ops->write_end	0,4096-ptr_max
PARAM_VALUE	2	inode->i_data.a_ops->writepages	0,4096-ptr_max
PARAM_VALUE	2	inode->i_mapping	4096-ptr_max
PARAM_VALUE	2	inode->i_mapping->a_ops	4096-ptr_max
PARAM_VALUE	2	inode->i_mapping->host->i_sb->s_cop->empty_dir	0,86,661756434209751040,4392966320616476672,5234023279986843648,8614756098313990144
PARAM_VALUE	2	inode->i_mapping->host->i_sb->s_cop->get_context	0,706,17350455714160640,4513809449498124288,5149251875611672576,7067778626864828416
PARAM_VALUE	2	inode->i_mapping->host->i_sb->s_cop->set_context	0,67,317457138841939968,3250154607523569664,5979066299606671360,6756104566897242112
PARAM_VALUE	2	inode->i_mapping->host->i_sb->s_export_op->encode_fh	0,2,4096-ptr_max
PARAM_VALUE	2	inode->i_mapping->i_mmap_rwsem.first_waiter->handoff_set	0-1
PARAM_VALUE	2	inode->i_mapping->i_mmap_rwsem.first_waiter->type	0-1
PARAM_VALUE	2	inode->i_op->atomic_open	0,4096-ptr_max
PARAM_VALUE	2	inode->i_op->create	0,4096-ptr_max
PARAM_VALUE	2	inode->i_op->fiemap	0,4096-ptr_max
PARAM_VALUE	2	inode->i_op->fileattr_get	0,4096-ptr_max
PARAM_VALUE	2	inode->i_op->fileattr_set	0,4096-ptr_max
PARAM_VALUE	2	inode->i_op->get_acl	0,434817594022129664,1176132492164517888,2308293591809245184,2352177825799393280,5894181231315005440,7161457072544161792,8358186677320523776
PARAM_VALUE	2	inode->i_op->get_inode_acl	0,4096-ptr_max
PARAM_VALUE	2	inode->i_op->get_link	0,4096-ptr_max
PARAM_VALUE	2	inode->i_op->get_offset_ctx	0,2606890545167454208
PARAM_VALUE	2	inode->i_op->getattr	0,4096-ptr_max
PARAM_VALUE	2	inode->i_op->link	0,4096-ptr_max
PARAM_VALUE	2	inode->i_op->listxattr	0,4096-ptr_max
PARAM_VALUE	2	inode->i_op->lookup	0,4096-ptr_max
PARAM_VALUE	2	inode->i_op->mkdir	0,4096-ptr_max
PARAM_VALUE	2	inode->i_op->mknod	0,4096-ptr_max
PARAM_VALUE	2	inode->i_op->permission	0,4096-ptr_max
PARAM_VALUE	2	inode->i_op->readlink	0,1728600404483375104,2832489546165891072,2874824064778891264,3069732422725099520,4516337085607264256
PARAM_VALUE	2	inode->i_op->rename	0,4096-ptr_max
PARAM_VALUE	2	inode->i_op->rmdir	0,4096-ptr_max
PARAM_VALUE	2	inode->i_op->set_acl	0,4096-ptr_max
PARAM_VALUE	2	inode->i_op->setattr	0,4096-ptr_max
PARAM_VALUE	2	inode->i_op->symlink	0,4096-ptr_max
PARAM_VALUE	2	inode->i_op->sync_lazytime	0,6951464784224747520
PARAM_VALUE	2	inode->i_op->tmpfile	0,4096-ptr_max
PARAM_VALUE	2	inode->i_op->unlink	0,4096-ptr_max
PARAM_VALUE	2	inode->i_op->update_time	0,4096-ptr_max
PARAM_VALUE	2	inode->i_rwsem.first_waiter->type	0-1
PARAM_VALUE	2	inode->i_sb->s_cop->inode_info_offs	1632,1720,1808,2632,2648,2704,2712
PARAM_VALUE	2	inode->i_sb->s_export_op->encode_fh	0,2,4096-ptr_max
PARAM_VALUE	2	inode->i_sb->s_umount.first_waiter->handoff_set	0-1
PARAM_VALUE	2	inode->i_sb->s_umount.first_waiter->type	0-1
PARAM_VALUE	3	index	0-2251799813685247
PARAM_VALUE	5	orders	0
BUF_SIZE	0	vmf->cow_page	(-1),64
BUF_SIZE	2	inode	(-1),1-s32max
BUF_SIZE	2	inode	(-1),1-s32max
BUF_SIZE	2	inode->i_mapping->a_ops	(-1),152
BUF_SIZE	2	inode->i_private	(-1),40
CAPPED_DATA	2	inode->i_mapping	1
CAPPED_DATA	3	index	1
CAPPED_DATA	3	index	1
DATA_SOURCE	0	vmf	$6
DATA_SOURCE	1	gfp	$5
DATA_SOURCE	2	inode	$0
DATA_SOURCE	3	index	$1
FUZZY_MAX	3	index	2251799813685247
NOSPEC	0	vmf->address
NOSPEC	0	vmf->pgoff
NOSPEC	2	inode->i_size
NOSPEC	3	index
NOSPEC	3	index
HARD_MAX	3	index	2251799813685247
RX_PATH
TASK_NOT_RUNNING
HOST_DATA	3	index	0-2251799813685247[c]
USER_DATA	0	vmf->address	0-u64max[c]
USER_DATA	0	vmf->pgoff	0-4503599627370495
USER_DATA	0	vmf->pte	4096-ptr_max[u]
USER_DATA	0	vmf->real_address	0-u64max[c]
USER_DATA	2	inode->i_blocks	0-36028797024823343,18428729675200069633-u64max
USER_DATA	2	inode->i_bytes	0-65023[c]
USER_DATA	2	inode->i_mode	0-u16max
USER_DATA	2	inode->i_sb->s_flags	0-u64max[c]
USER_DATA	2	inode->i_size	(-9223372036854775807)-(-4),0-s64max
USER_DATA	3	index	0-2251799813685247[c]
NO_OVERFLOW_SIMPLE	0	vmf->vma->vm_end
NO_OVERFLOW_SIMPLE	0	vmf->vma->vm_pgoff
NO_OVERFLOW_SIMPLE	0	vmf->vma->vm_start
NO_OVERFLOW_SIMPLE	2	inode->i_blkbits
NO_OVERFLOW_SIMPLE	2	inode->i_mapping->host->i_size
NO_OVERFLOW_SIMPLE	2	inode->i_sb->s_blocksize
NO_OVERFLOW_SIMPLE	2	inode->i_sb->s_blocksize_bits
UNITS	3	index	unit_page
UNITS	4	fault_mm	unit_byte
HALF_LOCKED2	2	&inode->i_rwsem