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| author | Theodore Ts'o <tytso@mit.edu> | 2019-08-11 16:30:41 -0400 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2019-08-11 16:30:41 -0400 |
| commit | b0c013e2928d3696ceb6401311dbc1d7fcccd6dd (patch) | |
| tree | 673e10bc5de72eab8f375f913df207ccf6a3afea /fs/ext4/ioctl.c | |
| parent | 547b9ad698b434eadca46319cb47e5875b55ef03 (diff) | |
| download | linux-b0c013e2928d3696ceb6401311dbc1d7fcccd6dd.tar.gz | |
ext4: add a new ioctl EXT4_IOC_CLEAR_ES_CACHE
The new ioctl EXT4_IOC_CLEAR_ES_CACHE will force an inode's extent
status cache to be cleared out. This is intended for use for
debugging.
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Diffstat (limited to 'fs/ext4/ioctl.c')
| -rw-r--r-- | fs/ext4/ioctl.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/fs/ext4/ioctl.c b/fs/ext4/ioctl.c index 442f7ef873fc36..15b1047878ab3c 100644 --- a/fs/ext4/ioctl.c +++ b/fs/ext4/ioctl.c @@ -1115,6 +1115,14 @@ resizefs_out: case EXT4_IOC_GET_ENCRYPTION_POLICY: return fscrypt_ioctl_get_policy(filp, (void __user *)arg); + case EXT4_IOC_CLEAR_ES_CACHE: + { + if (!inode_owner_or_capable(inode)) + return -EACCES; + ext4_clear_inode_es(inode); + return 0; + } + case EXT4_IOC_FSGETXATTR: { struct fsxattr fa; @@ -1233,6 +1241,7 @@ long ext4_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg) case EXT4_IOC_GET_ENCRYPTION_POLICY: case EXT4_IOC_SHUTDOWN: case FS_IOC_GETFSMAP: + case EXT4_IOC_CLEAR_ES_CACHE: break; default: return -ENOIOCTLCMD; |