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| author | Hugh Dickins <hughd@google.com> | 2023-08-08 21:32:21 -0700 |
|---|---|---|
| committer | Christian Brauner <brauner@kernel.org> | 2023-08-09 09:15:51 +0200 |
| commit | e07c469e979c104464300aaa3b7923f929055cd0 (patch) | |
| tree | b699387289ca70f89dc86f78753d0a4c61cbc803 /include/linux/shmem_fs.h | |
| parent | 5de75970c9fd7220e394b76e6d20fbafa1369b5a (diff) | |
| download | linux-e07c469e979c104464300aaa3b7923f929055cd0.tar.gz linux-e07c469e979c104464300aaa3b7923f929055cd0.tar.bz2 linux-e07c469e979c104464300aaa3b7923f929055cd0.zip | |
tmpfs: track free_ispace instead of free_inodes
In preparation for assigning some inode space to extended attributes,
keep track of free_ispace instead of number of free_inodes: as if one
tmpfs inode (and accompanying dentry) occupies very approximately 1KiB.
Unsigned long is large enough for free_ispace, on 64-bit and on 32-bit:
but take care to enforce the maximum. And fix the nr_blocks maximum on
32-bit: S64_MAX would be too big for it there, so say LONG_MAX instead.
Delete the incorrect limited<->unlimited blocks/inodes comment above
shmem_reconfigure(): leave it to the error messages below to describe.
Signed-off-by: Hugh Dickins <hughd@google.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Carlos Maiolino <cmaiolino@redhat.com>
Message-Id: <4fe1739-d9e7-8dfd-5bce-12e7339711da@google.com>
Signed-off-by: Christian Brauner <brauner@kernel.org>
Diffstat (limited to 'include/linux/shmem_fs.h')
| -rw-r--r-- | include/linux/shmem_fs.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/shmem_fs.h b/include/linux/shmem_fs.h index 9b2d2faff1d0..6b0c626620f5 100644 --- a/include/linux/shmem_fs.h +++ b/include/linux/shmem_fs.h @@ -54,7 +54,7 @@ struct shmem_sb_info { unsigned long max_blocks; /* How many blocks are allowed */ struct percpu_counter used_blocks; /* How many are allocated */ unsigned long max_inodes; /* How many inodes are allowed */ - unsigned long free_inodes; /* How many are left for allocation */ + unsigned long free_ispace; /* How much ispace left for allocation */ raw_spinlock_t stat_lock; /* Serialize shmem_sb_info changes */ umode_t mode; /* Mount mode for root directory */ unsigned char huge; /* Whether to try for hugepages */ |