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| author | Harshad Shirwadkar <harshadshirwadkar@gmail.com> | 2020-11-06 04:58:51 +0100 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2020-11-07 05:01:02 +0100 |
| commit | b21ebf143af219207214c79bc217beb39c43212a (patch) | |
| tree | 9b6d9c4af592531e4ec2dd328a6bdf45660a2fa4 /fs/ext4 | |
| parent | ext4: describe fast_commit feature flags (diff) | |
| download | linux-b21ebf143af219207214c79bc217beb39c43212a.tar.xz linux-b21ebf143af219207214c79bc217beb39c43212a.zip | |
ext4: mark fc ineligible if inode gets evictied due to mem pressure
If inode gets evicted due to memory pressure, we have to remove it
from the fast commit list. However, that inode may have uncommitted
changes that fast commits will lose. So, just fall back to full
commits in this case. Also, rename the fast commit ineligiblity reason
from "EXT4_FC_REASON_MEM" to "EXT4_FC_REASON_MEM_NOMEM" for better
expression.
Suggested-by: Jan Kara <jack@suse.cz>
Signed-off-by: Harshad Shirwadkar <harshadshirwadkar@gmail.com>
Link: https://lore.kernel.org/r/20201106035911.1942128-3-harshadshirwadkar@gmail.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Diffstat (limited to 'fs/ext4')
| -rw-r--r-- | fs/ext4/fast_commit.c | 4 | ||||
| -rw-r--r-- | fs/ext4/fast_commit.h | 2 | ||||
| -rw-r--r-- | fs/ext4/inode.c | 2 |
3 files changed, 5 insertions, 3 deletions
diff --git a/fs/ext4/fast_commit.c b/fs/ext4/fast_commit.c index 8d43058386c3..48b7bc129392 100644 --- a/fs/ext4/fast_commit.c +++ b/fs/ext4/fast_commit.c @@ -384,7 +384,7 @@ static int __track_dentry_update(struct inode *inode, void *arg, bool update) mutex_unlock(&ei->i_fc_lock); node = kmem_cache_alloc(ext4_fc_dentry_cachep, GFP_NOFS); if (!node) { - ext4_fc_mark_ineligible(inode->i_sb, EXT4_FC_REASON_MEM); + ext4_fc_mark_ineligible(inode->i_sb, EXT4_FC_REASON_NOMEM); mutex_lock(&ei->i_fc_lock); return -ENOMEM; } @@ -397,7 +397,7 @@ static int __track_dentry_update(struct inode *inode, void *arg, bool update) if (!node->fcd_name.name) { kmem_cache_free(ext4_fc_dentry_cachep, node); ext4_fc_mark_ineligible(inode->i_sb, - EXT4_FC_REASON_MEM); + EXT4_FC_REASON_NOMEM); mutex_lock(&ei->i_fc_lock); return -ENOMEM; } diff --git a/fs/ext4/fast_commit.h b/fs/ext4/fast_commit.h index 06907d485989..140fbb6af19e 100644 --- a/fs/ext4/fast_commit.h +++ b/fs/ext4/fast_commit.h @@ -100,7 +100,7 @@ enum { EXT4_FC_REASON_XATTR = 0, EXT4_FC_REASON_CROSS_RENAME, EXT4_FC_REASON_JOURNAL_FLAG_CHANGE, - EXT4_FC_REASON_MEM, + EXT4_FC_REASON_NOMEM, EXT4_FC_REASON_SWAP_BOOT, EXT4_FC_REASON_RESIZE, EXT4_FC_REASON_RENAME_DIR, diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index b96a18679a27..081b6a86b5db 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -327,6 +327,8 @@ stop_handle: ext4_xattr_inode_array_free(ea_inode_array); return; no_delete: + if (!list_empty(&EXT4_I(inode)->i_fc_list)) + ext4_fc_mark_ineligible(inode->i_sb, EXT4_FC_REASON_NOMEM); ext4_clear_inode(inode); /* We must guarantee clearing of inode... */ } |